Update changelogs from fern repo (#982)

Co-authored-by: Swimburger <[email protected]>

Author: fern-support

fern/products/sdks/overview/typescript/changelog/2025-09-25.mdx

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+## 3.2.1
+**`(fix):`** Set `compilerOptions.isolatedModules` and `compilerOptions.isolatedDeclarations` to `true` in _tsconfig.json_, and update the TypeScript code to comply with this setting. 
+Users that enable `isolatedModules` can now use the SDK without any TypeScript compilation errors.
+While `isolatedModules` is not turned on by default in TypeScript, more frameworks and tools enable it by default.
+
+**Warning**: If you have custom code, this may cause compilation errors. Please refer to the TypeScript documentation to learn more about these settings:
+* [Isolated Declarations](https://www.typescriptlang.org/tsconfig#isolatedDeclarations)
+* [Isolated Modules](https://www.typescriptlang.org/tsconfig#isolatedModules)
+
+